Kev tawg, kub kub, thiab cov teebmeem PID yog peb yam tseem ceeb uas cuam tshuam rau kev ua haujlwm ntawm crystalline silicon photovoltaic modules. Hnub no, kuv yuav coj koj los nkag siab txog qhov ua rau lub roj teeb tawg, yuav ua li cas txheeb xyuas thiab tiv thaiv lawv.
1. Dab tsi yog "crack"
Kev tawg yog ib qho tsis xws luag hauv crystalline silicon photovoltaic modules. Nyob rau hauv layman cov ntsiab lus, lawv yog micro-cracks uas tsis pom ntawm qhov muag liab qab. Vim nws tus yam ntxwv ntawm nws tus kheej siv lead ua qauv, crystalline silicon Cheebtsam yog heev nquag mus cracking.
Hauv cov txheej txheem ntws ntawm crystalline silicon module ntau lawm, ntau qhov sib txuas yuav ua rau cov kab nrib pleb ntawm tes. Lub hauv paus ua rau cov kab nrib pleb tuaj yeem raug suav hais tias yog kev ntxhov siab lossis kev ntxhov siab thermal ntawm silicon wafer. Tam sim no, txhawm rau txo cov nqi, crystalline silicon hlwb tau dhau los ua nyias thiab nyias, uas txo cov peev xwm ntawm cov hlwb los tiv thaiv kev puas tsuaj thiab ua rau tawg ntau dua.
2. Qhov cuam tshuam ntawm "cracking" ntawm kev ua haujlwm ntawm cov khoom
Tam sim no tsim los ntawm lub xovtooj ntawm tes yog sau thiab muab tau los ntawm cov busbars thiab nyias gridlines uas nws nto yog perpendicular rau ib leeg. Yog li ntawd, thaum cov kab nrib pleb (feem ntau cov kab nrib pleb sib npaug rau cov busbars) ua rau cov kab sib chaws nyias nyias tawg, qhov tam sim no yuav tsis raug xa mus rau cov busbars, ua rau ib nrab lossis txawm tias tsis ua haujlwm ntawm tes, thiab tseem tuaj yeem ua rau cov khib nyiab, kub kub, thiab lwm yam. ., tib lub sij hawm ua rau lub hwj chim attenuation ntawm lub Cheebtsam.
Cov kab nrib pleb perpendicular mus rau busbars tsis tshua muaj kev cuam tshuam rau nyias daim phiaj, yog li thaj chaw uas ua rau lub cell tsis ua hauj lwm yuav luag xoom.
Lub hnub ci zaj duab xis nyias nyias, uas tab tom txhim kho sai, tsis muaj teeb meem ntawm kev tawg vim nws cov khoom siv thiab cov yam ntxwv ntawm cov qauv. Nyob rau tib lub sijhawm, qhov saum npoo sau thiab xa tawm tam sim no los ntawm txheej txheej ntawm pob tshab conductive zaj duab xis. Txawm hais tias cov yeeb yaj kiab conductive tawg vim muaj cov teeb meem me me hauv lub roj teeb, nws yuav tsis ua rau lub roj teeb loj loj.
Cov kev tshawb fawb tau pom tias yog qhov tsis ua hauj lwm ntawm lub roj teeb hauv ib lub module yog nyob rau hauv 8 feem pua, nws muaj me ntsis cuam tshuam rau lub zog ntawm lub module, thiab 2/3 ntawm kab pheeb ces kaum kab nrib pleb nyob rau hauv lub module tsis muaj kev cuam tshuam rau lub hwj chim ntawm lub module. module. Yog li ntawd, txawm tias cracking yog ib qho teeb meem tshwm sim ntawm crystalline silicon cells, tsis tas yuav txhawj xeeb ntau dhau.
3. Cov txheej txheem los txheeb xyuas "kev tawg"
EL (Electroluminescence, electroluminescence) yog ib hom kev kuaj xyuas cov khoom siv hauv lub hnub ci lossis cov khoom siv, uas yog ib txoj hauv kev yooj yim thiab siv tau zoo rau kev kuaj xyuas cov kab nrib pleb. Siv lub hauv paus ntsiab lus electroluminescence ntawm crystalline silicon, cov duab ze-infrared ntawm cov khoom siv yog ntes los ntawm lub koob yees duab siab infrared kom tau txais thiab txiav txim siab qhov tsis xws ntawm cov khoom. Nws muaj qhov zoo ntawm qhov siab rhiab heev, kev tshawb nrhiav ceev ceev, thiab cov txiaj ntsig intuitive. Daim duab hauv qab no yog qhov kev xeem ntawm EL, uas qhia meej txog ntau yam tsis xws luag thiab tawg.
4. Cov laj thawj rau kev tsim ntawm "kev tawg"
Sab nraud quab yuam: Lub roj teeb yuav raug quab yuam sab nraud thaum vuam, lamination, thav duab lossis tuav, kev teeb tsa, kev tsim kho, thiab lwm yam, uas yuav ua rau tawg thaum tsis raug teeb tsa, cov khoom siv tsis raug lossis ua haujlwm tsis raug.
Kub kub: Lub xovtooj ntawm tes tsis tau preheated ntawm qhov kub tsis tshua muaj, thiab tom qab ntawd nws yuav nthuav dav tom qab raug kub hnyiab tau nyob rau lub sijhawm luv luv, uas yuav ua rau tawg, xws li vuam kub ntau, tsis tsim nyog teeb tsa ntawm lamination kub thiab lwm yam. tsis muaj.
Cov khoom siv raw: Cov khoom tsis zoo hauv cov khoom siv raw kuj yog ib qho tseem ceeb ua rau tawg.
5. Cov ntsiab lus tseem ceeb ntawm kev tiv thaiv kev tawg ntawm photovoltaic modules
Nyob rau hauv cov txheej txheem ntau lawm thiab tom ntej cia, kev thauj mus los, thiab kev teeb tsa, zam kev cuam tshuam sab nraud tsis zoo ntawm cov roj teeb hlwb, thiab tseem ua tib zoo saib xyuas qhov kub thiab txias ntawm qhov chaw cia.
Thaum lub sij hawm vuam, lub roj teeb yuav tsum sov ua ntej (tes vuam). Qhov kub ntawm cov hlau soldering yuav tsum ua tau raws li qhov yuav tsum tau ua.